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Print pages (PDF 82 kb)
 | Electrical specifications
| Model |
DM4 UHF(L) |
DM4 UHF(H)
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| Operating frequency band, MHz |
400-460 |
440-490
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| VSWR, not more than |
1.5
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| Gain OFFSET, dBi |
11.15 |
11.15
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| Sector in vertical plane , -3dB |
18В°
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| Impedance, Ohm |
50
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| Max. power input, W |
400
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Mechanical specifications
| Model |
DM4 UHF(L) |
DM4 UHF(H)
|
| Weight, kg |
6
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| Height, M |
2.4
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| Construction material |
Aluminium alloy
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| Mast diametr mm |
50-110
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| Rated wind velocity, m/s |
55
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| Wind loading area, m2 |
0.092
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| Load of side wind 45 m/s, H |
104
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| Rated wind velocity with 0.5" icing, m/s |
40
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| Temperature range, В°C |
from -50 to +60
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| Connector |
N-female
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In the conditions of increased demand for dipole four-element antennas DP4 UHF their modernization has been conducted with the aim to decrease the prime cost and to enhance the electrical reliability. As a result there were worked out the four-element all-welded antenna arrays - DM4-UHF(L) and DM4-UHF(H) which cover the range of 400-500 MHz. These antennas possess all the features of the panel antennas - high gain, broad operating bandwidth and elliptical shape of the radiation pattern.
Nonseparable adder unit improves the reliability of antenna and facilitates its mounting. The construction of two such antennas placed on the opposite edges of the mast suggests the best solution at creating quasi-circular antenna system (the annular phased antenna array).
A set of clamps CP-110 for mounting antenna to the mast is included into the antenna equipment and allows antenna`s reliable fixing at the telecommunication towers
DM4 UHF E-plane pattern
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DM4 UHF H-plane pattern
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VSWR diagram, DM4 UHF(L)
.gif)
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VSWR diagram, DM4 UHF(H)
.gif)
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